The term "abiogenic" refers to things that are not produced by living organisms. Therefore, synonyms for "more abiogenic" could be "non-biological," "inorganic," "lifeless," or "inanimate." Other possible synonyms might include "sterile," "dead," "lifeless," or "inert." Depending on the context, additional related words might also include "chemical," "pale," "artificial," or "synthetic." When describing environments or materials that are free from biological activity or influence, these synonyms can help to convey a sense of sterility, lifelessness, or lack of organic matter, emphasizing the inorganic nature of the subject at hand.